Manufacture of waxed paper



(No Model.)

H. PRASGE.

MANUFAGTURE of'. WAXBD PAPER.

No. 304,309. Patented Sept. 2, 1884.

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' `To all whom it may concern.-

llNrrnn STATES ?ATENT, Ormea.

HERMAN FRASCH, OF OLEYELAND, OHIO.

IVIANUFACTURE OF WAXED PAPER.

SPECIFICATION forming part of Letters Patent No. 304,309, datedSeptember 2, 1884.

' Appncannn med May-17,1884. (No model.)

Be it known that I, HERMAN FRAsoH, a citizen of the United States,residing at Gleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in the Manufacture of VaxedPaper, of which the following specification is a full, clear, and exactdescription.

This invention has reference to coating paper with paraftine or otherWax, which is applied thereto in a liquefied state by means of absorbentmaterial. Pieces of such material dip into the melted wax and draw it upby capillary attraction. The paper being moved over and in contact withthe absorbent material, becomes coated with the wax, which has beendrawn up, and which remains in a liquefied state. Capillary attractionrenews the supply of wax as it is carried off by the paper. In orderthat the paper may be coated evenly, it is necessary to have acomparatively large rubbing-surface. Heretofore t-he paper has beenpassed over the upper ends of blocks of felt, which blocks haveconstituted the absorbent material. The rubbing-surface thereforecorresponds with the cross-section of the felt blocks or capillaryconductors. TvVith conductors made of large cross-section to secure thenecessary rubbing-surface, the absorptive power is so great that anexcess of wax is supplied to the paper. A portion has there fore to beremoved, the saine as when the paper is run through a bath of the meltedparaffine. A roller has therefore been arranged above the ends of thefelt blocks to press the paper against them, so that they act as scrap'-ers. The paper, however, in any case is saturated, if notsupersaturated,'with the wax.

The present invention consists in increasing the rubbing area incomparison with the crosssection of the conductor. This is most easilysecured by making the paper rub against the side, instead of the end, ofthe capillary conductor or conductors. In this way the crosssection ofthe conductor is rendered independent of the dimensions of 'therubbing-surface, and may be such as to supply just the desired amount ofwax. The paper may therefore be evenly coated with the paraffine to anydesired degree upto saturation. The pressing-roller is or may bedispensed with.

The invention also comprises certain special constructions andcombinations of parts, as hereinafter set forth.

In the accompanying drawings, Figure I represents in verticallongitudinal section a coating apparatus constructed in accordance withthe invention; Fig. 2, a vertical crosssection of the same, Fig. 3 apartial view in longitudinal section of a slightly-modified form of theapparatus, and Figs. 4 and 5 detail views showing modes of fastening thewick or capillary conductors to their supports.

.A is a tight box, having a slot, I, at each end for the passage of thepaper B. It contains a pan, C, for holding the melted paraffine or wax,or other coating material, the wicksupports D, the wicks or capillaryconductors E, the guide-rod F, and a fountain or reservoir, G, formaintaining the level of the liquid in the pan. Said box is furtherprovided with chambers H, for the circulation of hot water, steam, orother heating-duid. The side 2 of the box is removable. AAs shown, theedges slide in grooves 3; 'but other suitable arrangement could beadopted. The pan C has at each end a ila-nge, 4, which slips under theflange 5, which is fastened to the bottom of the box, or to some partwhich itself is secured to said bottom. The object of this arrangementis to allow the pan to be withdrawn when desirable 'and to holditstationary when inserted. Other means for retaining it in place could beused. The wick-supports D are in /the form of plates bent atan obtuseangle. They are fastened between extensions 6 of the sides of the jpan.Flanges on the supports may be bolted to the side, or other receiving'means may be employed. The width of the pan at this point is equal to,or it may be greater than, the width of the paper to be coated. Thewicks or capillary conductors E vextend over the faces of said supportand dip at their lower edges into the paraffine in the pan. As shown inFi g. I, the material composing the capillary conductor is folded aroundits support, and the ends are stitched or otherwise fastened together at7 After the stitching the wick or i l conductor can be turned into theposition shown. The wick should iit the support close enough to preventits being carried around by the paper when the.` latter is drawn overit. In Figs. 4 and 5 the wick is not folded around the support, but isplaced only on the inner face thereof, and it is fastened to saidsupport. In Fig. 4 stitches 25 pass through holesin the bent-over endsofthe support and through the wick material. In Fig. 5 thewick is clampedbetween the bar 26 and the support. Bolts 27 hold the bar in place. Thepaperis held down between the adjacent inclined faces ofthe wicksupportsand against the surface of the wicks or capillary conductors by theguide-rod F. This rod extends the full width of the wicks andwick-supports, and is removable to permit the introduction of thepaper.4 The inner end fits in a socket, 8; the outer end is held4 at thebottoni of a slot, 9, by the bolt or catch 10. lIhis bolt or catch 10,which may slide or turn, extends over the reduced extremity 11 of theguide-rod, and prevents it either from being accidentally lifted up ordrawn out. Vhen it is desired to remove the rod, it is only necessary todraw back the bolt, when the outer end may be raised and the innerwithdrawn from the socket. The fountain or reservoir G is such as incommon use in studentla1nps. It is closed except through the neck 12,and has at the bottom a valve, 13,

which is held open by the pin 14 when the reservoir is in place. It issupported by the iiange 15, fastened to the reservoir, and resting uponthe surrounding plate 16 at the top of the uprights 17, which latter arefastened to the pan. The reservoir is set to one side of the pan, out ofthe way of the paper to be drawn through the apparatus.

The pan C, wick-support D, guide-rod F, and reservoir G, and so also thebox A of Fig. 1 and the heating-chamber II of Fig. 3, are or may beconstructed of metal, the guide-rod and reservoir being made of brass,the other parts of galvanized iron.

In Fig. 3 the walls of box A are made double, with an intermediatespace, which is filled with non-conducting material, such as felt,mineral wool, &c. The pan, with its appurtenances, is supported upon theheatingchamber II, which is provided with feet that are fastened to thebottom of the box. In both figures, therefore, the pan rests upon thetop ofa heating-chamber, and this is desirable, but it is not essential.The pan might rest directly upon the bottom of box A of Fig. 3 and theproper temperature be produced in said box by means of a steam-coil orother suitable appliance. The hot fluid is in- The paper is'stretehedbeother it goes through the waxing apparatus,

as shown in Fig. 1, rubbing over the surfaces` of the wicks or capillaryconductors, against which it is held by the guide-rod F, and also by thetension of the rolls. Being heated before reaching the conductors, it isin the best condition to absorb the wax with which the pores of thewicks are filled. The speed at which the paper is fed forward and thecharacter and thickness of the wicks used depend upon the character andthickness of the paper to be waxed and the degree of saturation which isdesired. The higher the speed of the paper and the less the thickness orabsorbent capacity of the wick the smaller will be the proportion of waxapplied to the paper.

For preparing waxed or paraiiined tissue paper for wrapping candies andfor similar purposes, which paper is from one sixty-fourth to onethirty-second of an inch thick, the following is recommended:temperature in the box, 1500'Fahrenheit; speed of paper, thirty feet perminute 5 rubbingsurface on two wicks, six running inches each, measuredin the direction in which the paper moves; material for the wicks, feltonceighth of an inch thick. These figures are of course variable, andthat within wide limits. They are only given by way of example.Modifications may also be made in the proportions, dimensions, andmaterials of which the apparatus is composed, and in other details ofconstruction, without departing from the spirit of the invention, andparts of the invention may be used separately. n

I claim the new improvements described, all andseveral, to wit:

1. The improvement in waxing paper by rubbing the paper against the sideof a wick or capillary conductor whose end dips into the melted wax, therubbing area being greater than the crossl section of the wick,substantially as described.

2. An apparatus for waxing paper, having oneor more wicks or capillaryconductors. for absorbing the wax and applying it to the paper, thewick-surface exposed to the rubbing against the paper being many timesgreater than the cross-section of the said wick or wicks, substantiallyas described.

3. In a paper-coating apparatus, the combination, with the pan orreceptacle for the material to be applied, of one or more wicksupportsand one or more guides for the paper, said parts being arranged so thatthe paper rubs over the side of the wick or wicks which rest upon saidsupports and dip into the liquid in said pan, substantially asdescribed.

p 4. In a paper-coating apparatus, the combination, with wick-supportsinclined toward each other, of the guide-rod between the same,substantially as described.

IOO

IIO

5. The combination of the pan, Wick-supports, and reservoir,substantially as described.

6. The combination, With the pan of a pa- 5 per-waxing apparatus, of aheating-chamber under said pan, substantially as described.

7. A paper-Waxing apparatus, comprising, in combination, a close box,one or more heating-chambers, a pan, one or more Wicksupports, one ormore wicks, paper-guides, 1o and a reservoir or fountain, substantiallyas described. In testimony whereof I affix my signature-i presence oftwo Witnesses.

HERMAN FRASCH. Witnesses:

E. F. JOHNSON, XV. H. BARTRAM.

